Early Classification Systems (2.3.2)

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What is cytochrome-c?
A protein used in respiration but it's not identical in all species.
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How is cytochrome-c used in classification?
If we compare the sequence of amino acids in samples of cytochrome-c from 2 different species, we can see if the species are closely related if the sequences are very similar.
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How is DNA used in classification?
All organisms use DNA as their genetic code. Comparison of DNA sequences is a good way to compare species. The more similar the DNA, the more closely related the 2 species are.
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What is the 3-Domain Classification System?
A system suggested by Woese in 1990 which was based on the detailed study of the RNA of all living organisms.
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What are the 3 domains called?
Bacteria, archaebacteria, eukaryotae.
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Card 2

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How is cytochrome-c used in classification?

Back

If we compare the sequence of amino acids in samples of cytochrome-c from 2 different species, we can see if the species are closely related if the sequences are very similar.

Card 3

Front

How is DNA used in classification?

Back

Preview of the front of card 3

Card 4

Front

What is the 3-Domain Classification System?

Back

Preview of the front of card 4

Card 5

Front

What are the 3 domains called?

Back

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